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<div id="overview"><a href="../../../../../apidocs/org/sindice/rdfcommons/beanmapper/DeserializationManager.html">View Javadoc</a></div><pre>

<a name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a name="2" href="#2">2</a>   <em class="jxr_comment"> * Copyright 2008-2010 Digital Enterprise Research Institute (DERI)</em>
<a name="3" href="#3">3</a>   <em class="jxr_comment"> *</em>
<a name="4" href="#4">4</a>   <em class="jxr_comment"> * Licensed under the Apache License, Version 2.0 (the "License");</em>
<a name="5" href="#5">5</a>   <em class="jxr_comment"> * you may not use this file except in compliance with the License.</em>
<a name="6" href="#6">6</a>   <em class="jxr_comment"> * You may obtain a copy of the License at</em>
<a name="7" href="#7">7</a>   <em class="jxr_comment"> *</em>
<a name="8" href="#8">8</a>   <em class="jxr_comment"> *     <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a name="9" href="#9">9</a>   <em class="jxr_comment"> *</em>
<a name="10" href="#10">10</a>  <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a name="11" href="#11">11</a>  <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
<a name="12" href="#12">12</a>  <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a name="13" href="#13">13</a>  <em class="jxr_comment"> * See the License for the specific language governing permissions and</em>
<a name="14" href="#14">14</a>  <em class="jxr_comment"> * limitations under the License.</em>
<a name="15" href="#15">15</a>  <em class="jxr_comment"> */</em>
<a name="16" href="#16">16</a>  
<a name="17" href="#17">17</a>  <strong class="jxr_keyword">package</strong> org.sindice.rdfcommons.beanmapper;
<a name="18" href="#18">18</a>  
<a name="19" href="#19">19</a>  <strong class="jxr_keyword">import</strong> org.sindice.rdfcommons.storage.ResultSet;
<a name="20" href="#20">20</a>  <strong class="jxr_keyword">import</strong> org.sindice.rdfcommons.vocabulary.RDFVocabulary;
<a name="21" href="#21">21</a>  
<a name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> java.lang.annotation.Annotation;
<a name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> java.util.ArrayList;
<a name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> java.util.Collection;
<a name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> java.util.Collections;
<a name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> java.util.HashMap;
<a name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> java.util.List;
<a name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> java.util.Map;
<a name="29" href="#29">29</a>  
<a name="30" href="#30">30</a>  <em class="jxr_javadoccomment">/**</em>
<a name="31" href="#31">31</a>  <em class="jxr_javadoccomment"> * This class performs the &lt;i&gt;RDF&lt;i&gt; to &lt;i&gt;bean&lt;/i&gt; conversion.</em>
<a name="32" href="#32">32</a>  <em class="jxr_javadoccomment"> *</em>
<a name="33" href="#33">33</a>  <em class="jxr_javadoccomment"> * @author Michele Mostarda ( mostarda@fbk.eu )</em>
<a name="34" href="#34">34</a>  <em class="jxr_javadoccomment"> * @version $Id: DeserializationManager.java 30 2010-12-02 18:18:27Z michele.mostarda $</em>
<a name="35" href="#35">35</a>  <em class="jxr_javadoccomment"> */</em>
<a name="36" href="#36">36</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/sindice/rdfcommons/beanmapper/DeserializationManager.html">DeserializationManager</a> {
<a name="37" href="#37">37</a>  
<a name="38" href="#38">38</a>      <strong class="jxr_keyword">private</strong> List&lt;CriteriaDeserializer&gt; deserializers;
<a name="39" href="#39">39</a>  
<a name="40" href="#40">40</a>      <strong class="jxr_keyword">private</strong> Map&lt;Identifier,Object&gt; deserializedObjects;
<a name="41" href="#41">41</a>  
<a name="42" href="#42">42</a>      <strong class="jxr_keyword">private</strong> List&lt;Issue&gt; issues;
<a name="43" href="#43">43</a>  
<a name="44" href="#44">44</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../org/sindice/rdfcommons/beanmapper/DeserializationManager.html">InternalDeserializationContext</a> internalDeserializationContext;
<a name="45" href="#45">45</a>  
<a name="46" href="#46">46</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../org/sindice/rdfcommons/beanmapper/DeserializationManager.html">DeserializationManager</a>() {
<a name="47" href="#47">47</a>          deserializers       = <strong class="jxr_keyword">new</strong> ArrayList&lt;CriteriaDeserializer&gt;();
<a name="48" href="#48">48</a>          deserializedObjects = <strong class="jxr_keyword">new</strong> HashMap&lt;Identifier, Object&gt;();
<a name="49" href="#49">49</a>          internalDeserializationContext = <strong class="jxr_keyword">new</strong> <a href="../../../../org/sindice/rdfcommons/beanmapper/DeserializationManager.html">InternalDeserializationContext</a>();
<a name="50" href="#50">50</a>          issues              = <strong class="jxr_keyword">new</strong> ArrayList&lt;Issue&gt;();
<a name="51" href="#51">51</a>          registerDefaultDeserializers();
<a name="52" href="#52">52</a>      }
<a name="53" href="#53">53</a>  
<a name="54" href="#54">54</a>      <em class="jxr_javadoccomment">/**</em>
<a name="55" href="#55">55</a>  <em class="jxr_javadoccomment">     * Returns the most appropriate {@link Deserializer} for the given class.</em>
<a name="56" href="#56">56</a>  <em class="jxr_javadoccomment">     *</em>
<a name="57" href="#57">57</a>  <em class="jxr_javadoccomment">     * @param clazz class to be deserialized.</em>
<a name="58" href="#58">58</a>  <em class="jxr_javadoccomment">     * @param annotations annotations associated to the given &lt;code&gt;clazz&lt;/code&gt;.</em>
<a name="59" href="#59">59</a>  <em class="jxr_javadoccomment">     * @return the best deserializer chosen for the given class.</em>
<a name="60" href="#60">60</a>  <em class="jxr_javadoccomment">     * @throws DeserializationException</em>
<a name="61" href="#61">61</a>  <em class="jxr_javadoccomment">     */</em>
<a name="62" href="#62">62</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../org/sindice/rdfcommons/beanmapper/CriteriaDeserializer.html">CriteriaDeserializer</a> getDeserializerFor(Class clazz, Annotation[] annotations)
<a name="63" href="#63">63</a>      <strong class="jxr_keyword">throws</strong> <a href="../../../../org/sindice/rdfcommons/beanmapper/DeserializationException.html">DeserializationException</a> {
<a name="64" href="#64">64</a>          <strong class="jxr_keyword">for</strong>(<a href="../../../../org/sindice/rdfcommons/beanmapper/CriteriaDeserializer.html">CriteriaDeserializer</a> deserializer : deserializers) {
<a name="65" href="#65">65</a>              <strong class="jxr_keyword">if</strong>(deserializer.acceptClass(clazz, annotations)) {
<a name="66" href="#66">66</a>                  <strong class="jxr_keyword">return</strong> deserializer;
<a name="67" href="#67">67</a>              }
<a name="68" href="#68">68</a>          }
<a name="69" href="#69">69</a>          <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/sindice/rdfcommons/beanmapper/DeserializationException.html">DeserializationException</a>( String.format(<span class="jxr_string">"Cannot find a deserializer for class %s"</span>, clazz) );
<a name="70" href="#70">70</a>      }
<a name="71" href="#71">71</a>  
<a name="72" href="#72">72</a>      <em class="jxr_javadoccomment">/**</em>
<a name="73" href="#73">73</a>  <em class="jxr_javadoccomment">     * Performs a static deserialization.</em>
<a name="74" href="#74">74</a>  <em class="jxr_javadoccomment">     * </em>
<a name="75" href="#75">75</a>  <em class="jxr_javadoccomment">     * @param clazz class of object to be deserialized.</em>
<a name="76" href="#76">76</a>  <em class="jxr_javadoccomment">     * @param endpoint endpoint used to retrieve triples to be deserialized.</em>
<a name="77" href="#77">77</a>  <em class="jxr_javadoccomment">     * @return an instance of class &lt;code&gt;T&lt;/code&gt;</em>
<a name="78" href="#78">78</a>  <em class="jxr_javadoccomment">     *         representing the static deserialization of class &lt;code&gt;T&lt;/code&gt;.</em>
<a name="79" href="#79">79</a>  <em class="jxr_javadoccomment">     * @throws DeserializationException</em>
<a name="80" href="#80">80</a>  <em class="jxr_javadoccomment">     */</em>
<a name="81" href="#81">81</a>      <strong class="jxr_keyword">public</strong> &lt;T&gt; T staticDeserialize(Class&lt;T&gt; clazz, <a href="../../../../org/sindice/rdfcommons/beanmapper/QueryEndpoint.html">QueryEndpoint</a> endpoint)
<a name="82" href="#82">82</a>      <strong class="jxr_keyword">throws</strong> <a href="../../../../org/sindice/rdfcommons/beanmapper/DeserializationException.html">DeserializationException</a> {
<a name="83" href="#83">83</a>          clear();
<a name="84" href="#84">84</a>          <strong class="jxr_keyword">final</strong> Annotation[] annotations = clazz.getAnnotations();
<a name="85" href="#85">85</a>          <strong class="jxr_keyword">return</strong> deserialize(internalDeserializationContext, clazz, annotations, <strong class="jxr_keyword">null</strong>, endpoint);
<a name="86" href="#86">86</a>      }
<a name="87" href="#87">87</a>  
<a name="88" href="#88">88</a>      <em class="jxr_javadoccomment">/**</em>
<a name="89" href="#89">89</a>  <em class="jxr_javadoccomment">     * Deserializes the given class returning a list of objects with type &lt;code&gt;clazz&lt;/code&gt;</em>
<a name="90" href="#90">90</a>  <em class="jxr_javadoccomment">     * for every instance detected in the RDF representation exposed with the query &lt;code&gt;endPoint&lt;/code&gt;. </em>
<a name="91" href="#91">91</a>  <em class="jxr_javadoccomment">     *</em>
<a name="92" href="#92">92</a>  <em class="jxr_javadoccomment">     * @param clazz class to be deserialized.</em>
<a name="93" href="#93">93</a>  <em class="jxr_javadoccomment">     * @param endPoint endpoint exposing the RDF data to be mapped to beans.</em>
<a name="94" href="#94">94</a>  <em class="jxr_javadoccomment">     * @return list of deserialized beans.</em>
<a name="95" href="#95">95</a>  <em class="jxr_javadoccomment">     */</em>
<a name="96" href="#96">96</a>      <strong class="jxr_keyword">public</strong> &lt;T&gt; Collection&lt;T&gt; deserialize(Class&lt;T&gt; clazz, <a href="../../../../org/sindice/rdfcommons/beanmapper/QueryEndpoint.html">QueryEndpoint</a> endPoint)
<a name="97" href="#97">97</a>      <strong class="jxr_keyword">throws</strong> <a href="../../../../org/sindice/rdfcommons/beanmapper/DeserializationException.html">DeserializationException</a> {
<a name="98" href="#98">98</a>          clear();
<a name="99" href="#99">99</a>          <strong class="jxr_keyword">final</strong> Annotation[] annotations = clazz.getAnnotations();
<a name="100" href="#100">100</a>         <strong class="jxr_keyword">return</strong> deserializeInstancesOf(clazz, annotations, endPoint);
<a name="101" href="#101">101</a>     }
<a name="102" href="#102">102</a> 
<a name="103" href="#103">103</a>     <em class="jxr_javadoccomment">/**</em>
<a name="104" href="#104">104</a> <em class="jxr_javadoccomment">     * Registers a deserializer within the manager.</em>
<a name="105" href="#105">105</a> <em class="jxr_javadoccomment">     *</em>
<a name="106" href="#106">106</a> <em class="jxr_javadoccomment">     * @param deserializer registers a deserializer to this manager.</em>
<a name="107" href="#107">107</a> <em class="jxr_javadoccomment">     * @return &lt;code&gt;true&lt;/code&gt; if the deserializer is effectively added,</em>
<a name="108" href="#108">108</a> <em class="jxr_javadoccomment">     *         &lt;code&gt;false&lt;/code&gt; otherwise.</em>
<a name="109" href="#109">109</a> <em class="jxr_javadoccomment">     */</em>
<a name="110" href="#110">110</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> addDeserializer(<a href="../../../../org/sindice/rdfcommons/beanmapper/CriteriaDeserializer.html">CriteriaDeserializer</a> deserializer) {
<a name="111" href="#111">111</a>         <strong class="jxr_keyword">if</strong>(deserializer == <strong class="jxr_keyword">null</strong>) {
<a name="112" href="#112">112</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NullPointerException(<span class="jxr_string">"deserializer cannot be null."</span>);
<a name="113" href="#113">113</a>         }
<a name="114" href="#114">114</a>         <strong class="jxr_keyword">return</strong> deserializers.add(deserializer);
<a name="115" href="#115">115</a>     }
<a name="116" href="#116">116</a> 
<a name="117" href="#117">117</a>     <em class="jxr_javadoccomment">/**</em>
<a name="118" href="#118">118</a> <em class="jxr_javadoccomment">     * Deregisters a deserializer from the manager.</em>
<a name="119" href="#119">119</a> <em class="jxr_javadoccomment">     *</em>
<a name="120" href="#120">120</a> <em class="jxr_javadoccomment">     * @param deserializer deserializer to be deregistered.</em>
<a name="121" href="#121">121</a> <em class="jxr_javadoccomment">     * @return &lt;code&gt;true&lt;/code&gt; if the deserializer is effectively removed, &lt;code&gt;false&lt;/code&gt; otherwise.</em>
<a name="122" href="#122">122</a> <em class="jxr_javadoccomment">     */</em>
<a name="123" href="#123">123</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> removeDeserializer(<a href="../../../../org/sindice/rdfcommons/beanmapper/CriteriaDeserializer.html">CriteriaDeserializer</a> deserializer) {
<a name="124" href="#124">124</a>         <strong class="jxr_keyword">return</strong> deserializers.remove(deserializer);
<a name="125" href="#125">125</a>     }
<a name="126" href="#126">126</a> 
<a name="127" href="#127">127</a>     <strong class="jxr_keyword">public</strong> List&lt;Issue&gt; getIssues() {
<a name="128" href="#128">128</a>         <strong class="jxr_keyword">return</strong> Collections.unmodifiableList(issues);
<a name="129" href="#129">129</a>     }
<a name="130" href="#130">130</a> 
<a name="131" href="#131">131</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> hasIssues() {
<a name="132" href="#132">132</a>         <strong class="jxr_keyword">return</strong> ! issues.isEmpty();
<a name="133" href="#133">133</a>     }
<a name="134" href="#134">134</a> 
<a name="135" href="#135">135</a>     <em class="jxr_javadoccomment">/**</em>
<a name="136" href="#136">136</a> <em class="jxr_javadoccomment">     * Performs a type deserialization.</em>
<a name="137" href="#137">137</a> <em class="jxr_javadoccomment">     * </em>
<a name="138" href="#138">138</a> <em class="jxr_javadoccomment">     * @param context context used for deserialization.</em>
<a name="139" href="#139">139</a> <em class="jxr_javadoccomment">     * @param clazz class to be deserialized.</em>
<a name="140" href="#140">140</a> <em class="jxr_javadoccomment">     * @param annotations annotations associated to &lt;code&gt;clazz&lt;/code&gt;.</em>
<a name="141" href="#141">141</a> <em class="jxr_javadoccomment">     * @param identifier identifier associated to to &lt;code&gt;clazz&lt;/code&gt;.</em>
<a name="142" href="#142">142</a> <em class="jxr_javadoccomment">     * @param endpoint endpoint exposing the RDF dataset mapped to &lt;code&gt;clazz&lt;/code&gt;.</em>
<a name="143" href="#143">143</a> <em class="jxr_javadoccomment">     * @return the Java object representing the deserialization of &lt;code&gt;clazz&lt;/code&gt;.</em>
<a name="144" href="#144">144</a> <em class="jxr_javadoccomment">     * @throws DeserializationException</em>
<a name="145" href="#145">145</a> <em class="jxr_javadoccomment">     */</em>
<a name="146" href="#146">146</a>     <strong class="jxr_keyword">protected</strong> &lt;T&gt; T deserialize(
<a name="147" href="#147">147</a>             <a href="../../../../org/sindice/rdfcommons/beanmapper/DeserializationContext.html">DeserializationContext</a> context,
<a name="148" href="#148">148</a>             Class&lt;T&gt; clazz,
<a name="149" href="#149">149</a>             Annotation[] annotations,
<a name="150" href="#150">150</a>             <a href="../../../../org/sindice/rdfcommons/beanmapper/Identifier.html">Identifier</a> identifier,
<a name="151" href="#151">151</a>             <a href="../../../../org/sindice/rdfcommons/beanmapper/QueryEndpoint.html">QueryEndpoint</a> endpoint
<a name="152" href="#152">152</a>     ) <strong class="jxr_keyword">throws</strong> <a href="../../../../org/sindice/rdfcommons/beanmapper/DeserializationException.html">DeserializationException</a> {
<a name="153" href="#153">153</a> 
<a name="154" href="#154">154</a>         <strong class="jxr_keyword">final</strong> <a href="../../../../org/sindice/rdfcommons/beanmapper/Deserializer.html">Deserializer</a> deserializer = context.getDeserializerFor(clazz, annotations);
<a name="155" href="#155">155</a> 
<a name="156" href="#156">156</a>         Object deserialized = deserializedObjects.get(identifier);
<a name="157" href="#157">157</a>         <strong class="jxr_keyword">if</strong>(deserialized != <strong class="jxr_keyword">null</strong>) {
<a name="158" href="#158">158</a>             <strong class="jxr_keyword">try</strong> {
<a name="159" href="#159">159</a>                 <strong class="jxr_keyword">return</strong> (T) deserialized;
<a name="160" href="#160">160</a>             } <strong class="jxr_keyword">catch</strong> (ClassCastException cce) {
<a name="161" href="#161">161</a>                 <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/sindice/rdfcommons/beanmapper/DeserializationException.html">DeserializationException</a>(
<a name="162" href="#162">162</a>                     String.format(
<a name="163" href="#163">163</a>                             <span class="jxr_string">"The class %s is associated to the identifier %s that has been "</span> +
<a name="164" href="#164">164</a>                             <span class="jxr_string">"already deserialized with object %s that is not of the expected type."</span>,
<a name="165" href="#165">165</a>                             clazz, identifier, deserialized
<a name="166" href="#166">166</a>                     )
<a name="167" href="#167">167</a>                 );
<a name="168" href="#168">168</a>             }
<a name="169" href="#169">169</a>         } <strong class="jxr_keyword">else</strong> {
<a name="170" href="#170">170</a>             deserialized = deserializer.deserialize(
<a name="171" href="#171">171</a>                     <strong class="jxr_keyword">new</strong> <a href="../../../../org/sindice/rdfcommons/beanmapper/DeserializationManager.html">InternalDeserializationContext</a>(),
<a name="172" href="#172">172</a>                     clazz,
<a name="173" href="#173">173</a>                     annotations,
<a name="174" href="#174">174</a>                     identifier,
<a name="175" href="#175">175</a>                     endpoint
<a name="176" href="#176">176</a>             );
<a name="177" href="#177">177</a>             deserializedObjects.put(identifier, deserialized);
<a name="178" href="#178">178</a>             <strong class="jxr_keyword">return</strong> (T) deserialized;
<a name="179" href="#179">179</a>         }
<a name="180" href="#180">180</a>     }
<a name="181" href="#181">181</a> 
<a name="182" href="#182">182</a>     <strong class="jxr_keyword">protected</strong> &lt;T&gt; Collection&lt;T&gt; deserializeInstancesOf(
<a name="183" href="#183">183</a>             Class&lt;T&gt; clazz,
<a name="184" href="#184">184</a>             Annotation[] annotations,
<a name="185" href="#185">185</a>             <a href="../../../../org/sindice/rdfcommons/beanmapper/QueryEndpoint.html">QueryEndpoint</a> endPoint
<a name="186" href="#186">186</a>     ) <strong class="jxr_keyword">throws</strong> <a href="../../../../org/sindice/rdfcommons/beanmapper/DeserializationException.html">DeserializationException</a> {
<a name="187" href="#187">187</a>         <strong class="jxr_keyword">final</strong> String classUrl = BaseSerializer.getClassURL(clazz);
<a name="188" href="#188">188</a>         endPoint.addQuery(<span class="jxr_string">"?instance"</span>, RDFVocabulary.TYPE, classUrl);
<a name="189" href="#189">189</a>         <a href="../../../../org/sindice/rdfcommons/storage/ResultSet.html">ResultSet</a> rs = endPoint.execute();
<a name="190" href="#190">190</a>         <a href="../../../../org/sindice/rdfcommons/beanmapper/Identifier.html">Identifier</a> identifier;
<a name="191" href="#191">191</a>         List&lt;T&gt; result = <strong class="jxr_keyword">new</strong> ArrayList&lt;T&gt;();
<a name="192" href="#192">192</a>         <strong class="jxr_keyword">while</strong> (rs.hasNext()) {
<a name="193" href="#193">193</a>             identifier = <strong class="jxr_keyword">new</strong> <a href="../../../../org/sindice/rdfcommons/beanmapper/Identifier.html">Identifier</a>( rs.getVariableString(<span class="jxr_string">"?instance"</span>), Identifier.Type.resource);
<a name="194" href="#194">194</a>             result.add( deserialize(internalDeserializationContext, clazz, annotations, identifier, endPoint) );
<a name="195" href="#195">195</a>             rs.next();
<a name="196" href="#196">196</a>         }
<a name="197" href="#197">197</a>         <strong class="jxr_keyword">return</strong> result;
<a name="198" href="#198">198</a>     }
<a name="199" href="#199">199</a> 
<a name="200" href="#200">200</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> clear() {
<a name="201" href="#201">201</a>         deserializedObjects.clear();
<a name="202" href="#202">202</a>         issues.clear();
<a name="203" href="#203">203</a>     }
<a name="204" href="#204">204</a> 
<a name="205" href="#205">205</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> registerDefaultDeserializers() {
<a name="206" href="#206">206</a>         addDeserializer( <strong class="jxr_keyword">new</strong> EnumDeserializer()       );
<a name="207" href="#207">207</a>         addDeserializer( <strong class="jxr_keyword">new</strong> CollectionDeserializer() );
<a name="208" href="#208">208</a>         addDeserializer( <strong class="jxr_keyword">new</strong> ArrayDeserializer()      );
<a name="209" href="#209">209</a>         addDeserializer( <strong class="jxr_keyword">new</strong> StaticBeanDeserializer() );
<a name="210" href="#210">210</a>         addDeserializer( <strong class="jxr_keyword">new</strong> PrimitiveDeserializer()  );
<a name="211" href="#211">211</a>         addDeserializer( <strong class="jxr_keyword">new</strong> BeanDeserializer()       );
<a name="212" href="#212">212</a>     }
<a name="213" href="#213">213</a> 
<a name="214" href="#214">214</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/sindice/rdfcommons/beanmapper/DeserializationManager.html">InternalDeserializationContext</a> implements <a href="../../../../org/sindice/rdfcommons/beanmapper/DeserializationContext.html">DeserializationContext</a> {
<a name="215" href="#215">215</a> 
<a name="216" href="#216">216</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Map&lt;Identifier, Object&gt; unmodifiableDeserilizedObjects =
<a name="217" href="#217">217</a>                 Collections.unmodifiableMap(deserializedObjects);
<a name="218" href="#218">218</a> 
<a name="219" href="#219">219</a>         <strong class="jxr_keyword">public</strong> Map&lt;Identifier, Object&gt; getDeserializedObjects() {
<a name="220" href="#220">220</a>             <strong class="jxr_keyword">return</strong> unmodifiableDeserilizedObjects;
<a name="221" href="#221">221</a>         }
<a name="222" href="#222">222</a> 
<a name="223" href="#223">223</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> registerInstance(<a href="../../../../org/sindice/rdfcommons/beanmapper/Identifier.html">Identifier</a> identifier, Object instance) {
<a name="224" href="#224">224</a>             <strong class="jxr_keyword">if</strong>(identifier == <strong class="jxr_keyword">null</strong>) {
<a name="225" href="#225">225</a>                 <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NullPointerException(<span class="jxr_string">"identifier cannot be null."</span>);
<a name="226" href="#226">226</a>             }
<a name="227" href="#227">227</a>             <strong class="jxr_keyword">if</strong>(instance == <strong class="jxr_keyword">null</strong>) {
<a name="228" href="#228">228</a>                 <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NullPointerException(<span class="jxr_string">"instance cannot be null."</span>);
<a name="229" href="#229">229</a>             }
<a name="230" href="#230">230</a> 
<a name="231" href="#231">231</a>             Object currInstance = deserializedObjects.get(identifier);
<a name="232" href="#232">232</a>             <strong class="jxr_keyword">if</strong>( currInstance != <strong class="jxr_keyword">null</strong> &amp;&amp; ! instance.equals(currInstance) ) {
<a name="233" href="#233">233</a>                 <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(
<a name="234" href="#234">234</a>                     String.format(
<a name="235" href="#235">235</a>                         <span class="jxr_string">"The identifier %s cannot be associated to the instance %s "</span> +
<a name="236" href="#236">236</a>                         <span class="jxr_string">"because already associated to instance %s."</span>,
<a name="237" href="#237">237</a>                         identifier,
<a name="238" href="#238">238</a>                         instance,
<a name="239" href="#239">239</a>                         currInstance
<a name="240" href="#240">240</a>                     )
<a name="241" href="#241">241</a>                 );
<a name="242" href="#242">242</a>             }
<a name="243" href="#243">243</a>             deserializedObjects.put(identifier, instance);
<a name="244" href="#244">244</a>         }
<a name="245" href="#245">245</a> 
<a name="246" href="#246">246</a>         <strong class="jxr_keyword">public</strong> <a href="../../../../org/sindice/rdfcommons/beanmapper/Deserializer.html">Deserializer</a> getDeserializerFor(Class clazz, Annotation[] annotations)
<a name="247" href="#247">247</a>         <strong class="jxr_keyword">throws</strong> <a href="../../../../org/sindice/rdfcommons/beanmapper/DeserializationException.html">DeserializationException</a> {
<a name="248" href="#248">248</a>             <strong class="jxr_keyword">return</strong> DeserializationManager.<strong class="jxr_keyword">this</strong>.getDeserializerFor(clazz, annotations);
<a name="249" href="#249">249</a>         }
<a name="250" href="#250">250</a> 
<a name="251" href="#251">251</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> reportIssue(String msg) {
<a name="252" href="#252">252</a>             issues.add( <strong class="jxr_keyword">new</strong> Issue(msg) );
<a name="253" href="#253">253</a>         }
<a name="254" href="#254">254</a> 
<a name="255" href="#255">255</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> reportIssue(String msg, Throwable cause) {
<a name="256" href="#256">256</a>             issues.add( <strong class="jxr_keyword">new</strong> Issue(msg, cause) );
<a name="257" href="#257">257</a>         }
<a name="258" href="#258">258</a> 
<a name="259" href="#259">259</a>         <strong class="jxr_keyword">public</strong> &lt;T&gt; T deserialize(
<a name="260" href="#260">260</a>                 <a href="../../../../org/sindice/rdfcommons/beanmapper/DeserializationContext.html">DeserializationContext</a> context,
<a name="261" href="#261">261</a>                 Class&lt;T&gt; clazz,
<a name="262" href="#262">262</a>                 Annotation[] annotations,
<a name="263" href="#263">263</a>                 <a href="../../../../org/sindice/rdfcommons/beanmapper/Identifier.html">Identifier</a> identifier,
<a name="264" href="#264">264</a>                 <a href="../../../../org/sindice/rdfcommons/beanmapper/QueryEndpoint.html">QueryEndpoint</a> endPoint
<a name="265" href="#265">265</a>         ) <strong class="jxr_keyword">throws</strong> <a href="../../../../org/sindice/rdfcommons/beanmapper/DeserializationException.html">DeserializationException</a> {
<a name="266" href="#266">266</a>             <strong class="jxr_keyword">try</strong> {
<a name="267" href="#267">267</a>                 <strong class="jxr_keyword">return</strong> DeserializationManager.<strong class="jxr_keyword">this</strong>.deserialize(context, clazz, annotations, identifier, endPoint);
<a name="268" href="#268">268</a>             } <strong class="jxr_keyword">catch</strong> (StackOverflowError soe) {
<a name="269" href="#269">269</a>                 <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/sindice/rdfcommons/beanmapper/DeserializationException.html">DeserializationException</a>(
<a name="270" href="#270">270</a>                         <span class="jxr_string">"A stack overflow occurred. "</span> +
<a name="271" href="#271">271</a>                         <span class="jxr_string">"May be you have a circular reference. "</span> +
<a name="272" href="#272">272</a>                         <span class="jxr_string">"Remember to register beans within deserialization context when defining a new deserializer."</span>,
<a name="273" href="#273">273</a>                         soe
<a name="274" href="#274">274</a>                 ); 
<a name="275" href="#275">275</a>             }
<a name="276" href="#276">276</a>         }
<a name="277" href="#277">277</a>     }
<a name="278" href="#278">278</a> 
<a name="279" href="#279">279</a> }
</pre>
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